It's the happiest kind of surprise: You're watching TV and out of nowhere, Jon Hamm pops up in the random television show you just so happen to be watching. That, ladies and gentlemen, is what we like to call a Hammeo.

Recognizing Jon Hamm's uncredited voice on the other end of a phone call in Tom Ford's directorial debut? Hammeo. Watching a music video that follows around a lonesome blue yeti? Boom! Hammeo.